Step 1: Attach Stand

Start off with plain old treadmill. No need to modify the treadmill in anyway. Using an old piece of scrap metal got from and old weight bench to hold the front of the bicycle, I cabletied it to the frame of the treadmill. Anyone with some welding skills could make a similar stand.

Step 2: Insert Shaft

Insert threaded bar or two bolts on the stand to rest the bicycle frame.

Step 3: Attach Bicycle

Take the front wheel of your bicycle and pop it on the shaft and tighten the nuts . Easy as that. Digital display will give you the amount of miles and speed you are cycling. Simple as pie!

I tried this... at 5mph my treadmill quit working and gave me some error message. It's an older treadmill I picked up used but either way, it didn't work. I don't know if the problem is just that if you pedal just the slightest bit faster than what the motor on the treadmill is going it screws it up or what. If that's the case then it kind of defeats the point since pedaling and actually feeling any resistance what so ever instantly causes the treadmill to glitch out. I tried taking the drive belt off the motor on the treadmill to make it self propelled but now the walking belt won't budge... I'm at a loss here but either way it didn't work for me. Worked great in theory but didn't work in real life for me. I'm going to keep screwing around with it to see if I can't figure something out since I can't stand that treadmill anyways but as of right now... no dice.

Do you ever smell burning of rubber? Because unlike with running, where your feet are moving with the belt... the tire is stationary and probably creates an incredible amount of pinpoint friction in the area directly below the tire and on the underside of the belt.

To combat boredom on my Elliptical machine, I learn a new language while I'm at it. I use Pimsleur language programs on my mp3 player. Each lesson is about 30 minutes so I can get through about 2 or 3 of them and feel like I've killed two birds with one stone. Keeps the exercise from being boring and I learn a new language.

Very clever and innovative. If someone does not have welding equipment or skills, find a friend who does or take the job to a welding shop. With some careful thought, bolts and screws could probably do what is necessary for this project. Riding a stationary bike is not the most fascinating activity and boredom sets in quickly. Someone made a suggestion I have found helpful. Place a fan so it blows on you while riding. The bigger the fan, the better. Somehow it makes me think I am out on the road and there is far less boredom. The fan also cools you, which was the basis for the person's suggestion to me.

To combat boredom, why not combine this with the treadmill-as-game-controller hack so you can cycle around Second Life or wherever you choose. I'm sure it would add a new dimension to your speedruns :)